#!/usr/bin/python

# Copyright (c) 2009, Purdue University
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"""Make zone, view, dns server, dns server set tool for dnsmanagement"""


__copyright__ = 'Copyright (C) 2009, Purdue University'
__license__ = 'BSD'
__version__ = '0.7'


import os
import sys
import getpass

from optparse import OptionParser

from roster_user_tools import cli_common_lib
from roster_user_tools import roster_client_lib


def main(args):
  """Collects command line arguments.

  Inputs:
    args: list of arguments from the command line
  """
  parser = OptionParser(version='%%prog (Roster %s)' % __version__)

  parser.add_option('-v', '--view', action='store', dest='view',
                    help='Modify a view.', default=None)
  parser.add_option('-z', '--zone', action='store', dest='zone',
                    help='Modify a zone.', default=False)
  parser.add_option('-o', '--options', action='store', dest='options',
                    help='Extra zone/view options.',
                    metavar='<view-options>', default=None)
  parser.add_option('--cidr-block', action='store', dest='cidr_block',
                    help='Cidr block for reverse zones.',
                    metavar='<cidr-block>', default=None)
  parser.add_option('--dont-make-any', action='store_false',
                    dest='dont_make_any',
                    help='Make a zone in a view other than any, must specify'
                         ' view name with --view-name', default=True)
  parser.add_option('--origin', action='store', dest='origin',
                    help='Zone origin.', metavar='<origin>', default=None)
  parser.add_option('-t', '--type', action='store', dest='type',
                    help='Zone type.', metavar='<type>', default=None)
  parser.add_option('-m', '--make-all', action='store_true', dest='make_all',
                    help='Make arguments automatically.', default=False)
  parser.add_option('-s', '--server', action='store', dest='server',
                    help='XML RPC Server URL.', metavar='<server>',
                    default=None)
  parser.add_option('--config-file', action='store', dest='config_file',
                    help='Config file location.', metavar='<file>',
                    default=None)
  parser.add_option('-u', '--username', action='store', dest='username',
                    help='Run as a different username.', metavar='<username>',
                    default=unicode(getpass.getuser()))
  parser.add_option('-p', '--password', action='store', dest='password',
                    help='Password string, NOTE: It is insecure to use this '
                         'flag on the command line.', metavar='<password>',
                    default=None)
  parser.add_option('-c', '--cred-file', action='store', dest='credfile',
                    help='Location of credential file.', metavar='<cred-file>',
                    default=None)
  parser.add_option('--cred-string', action='store', dest='credstring',
                    help='String of credential.', metavar='<cred-string>',
                    default=None)
  parser.add_option('-r', '--reverse', action='store_true', dest='reverse',
                    help='Modify a reverse zone.', default=False)
  parser.add_option('-q', '--quiet', action='store_true', dest='quiet',
                    help='Suppress program output.', default=False)

  (globals()["options"], args) = parser.parse_args(args)

  try:
    cli_common_lib_instance = cli_common_lib.CliCommonLib(options)
  except cli_common_lib.ArgumentError, e:
    print 'ERROR: %s' % e
    sys.exit(1)

  dns_server_set_exists = False
  view_exists = False
  zone_exists = False

  if( options.zone ):
    if( not options.type ):
      cli_common_lib_instance.DnsError(
          'A zone type must be specified with -t/--type', 1)
    views = roster_client_lib.RunFunction(u'ListViews', options.username,
                                          credfile=options.credfile,
                                          credstring=options.credstring,
                                          kwargs={u'view_name': options.view},
                                          server_name=options.server)[
                                              'core_return']
    if( options.view not in views and options.view ):
      cli_common_lib_instance.DnsError('The view specified does not exist.', 1)
    if( options.reverse ):
      if( options.origin and options.cidr_block ):
        cli_common_lib_instance.DnsError(
            'Origin and cidr block cannot be given simultaneously for '
            'reverse zones.', 1)
      if( not options.origin and not options.cidr_block ):
        cli_common_lib_instance.DnsError(
            'Either an origin or cidr block must be specified when '
            'making reverse zones.', 1)
      if( not options.origin ):
        options.origin = roster_client_lib.RunFunction(
            u'ReverseIP', options.username, credfile=options.credfile,
            credstring=options.credstring, args=[options.cidr_block],
            server_name=options.server)['core_return']
      else:
        options.cidr_block = roster_client_lib.RunFunction(
            u'UnReverseIP', options.username, credfile=options.credfile,
            credstring=options.credstring, args=[options.origin],
            server_name=options.server)['core_return']

      zones = roster_client_lib.RunFunction(
          u'MakeZone', options.username, credfile=options.credfile,
          credstring=options.credstring,
          args=[options.zone, options.type, options.origin],
          kwargs={u'view_name': options.view, u'zone_options': options.options,
                  u'make_any': options.dont_make_any},
          server_name=options.server)['core_return']
      if( not options.quiet ):
        print ('ADDED REVERSE ZONE: zone_name: %s zone_type: %s '
               'zone_origin: %s zone_options: %s view_name: %s' % (
                   options.zone, options.type, options.origin, options.options,
                   options.view))
      roster_client_lib.RunFunction(
          u'MakeReverseRangeZoneAssignment', options.username,
          credfile=options.credfile, credstring=options.credstring,
          server_name=options.server,
          args=[options.zone, options.cidr_block])
      if( not options.quiet ):
        print ('ADDED REVERSE RANGE ZONE ASSIGNMENT: zone_name: %s '
               'cidr_block: %s ' % (
                   options.zone, options.cidr_block))

    else:
      if( not options.origin ):
        cli_common_lib_instance.DnsError(
            'An origin must be specified with forward zones.', 1)
      zones = roster_client_lib.RunFunction(
          u'MakeZone', options.username, credfile=options.credfile,
          credstring=options.credstring,
          args=[options.zone, options.type, options.origin],
          kwargs={u'view_name': options.view, u'zone_options': options.options,
                  u'make_any': options.dont_make_any},
          server_name=options.server)['core_return']
      if( not options.quiet ):
        print ('ADDED FORWARD ZONE: zone_name: %s zone_type: %s '
               'zone_origin: %s zone_options: %s view_name: %s' % (
                   options.zone, options.type, options.origin, options.options,
                   options.view))

if __name__ == "__main__":
  main(sys.argv[1:])
